Improvement in harrows



J. F. CHASE.

HARROW.

Patented April 11, 18.76.

N.PETER5, PNOYOLITHOGRAPMER. WASHINGTONI D C,

C is to enablethe tooth to spring back and clear itself from stones, roots, and other ob- `The frameBis made in two parts, the tooth JOHN E. CHASE, or EAST IMPROVEMENT HADDAM, CONNECTICUT.

IN HARROWS.

Specieation forming part of Letters Patent No. 175,852,1ated April 11, 1876; application filed 'March 24, 1876. i

To all whom it may concern:

Be itA known that I, JOHN FRANK CHASE, of the town of East Haddam, in the county of Middlesex and State otl Connecticut, have invented a new and useful Improvement in Self- Adjusting Spring `Harroi'wTeeth; which improvement is fully set forth in the following specification, reference being had to the accompanying drawings Y Figure 1 represents the harrow complete. Letter A represents tooth in combination with frame fB and capA C, cap C covering spring and tooth. The object ofspring in cap structions with which itrnay come in contact.

A is set between these parts, bolt D passing through the beams and through tooth A, holding said parts together, and upon 4which tooth A turns back when meeting obstructions, and also allowing the tooth A to be with the tooth A in combination with spring G, cap C, and bolt D. Fig. 3 represents the tooth A in combination with the spring G and cap C in pesition in which it would be when meeting obstruction and passing over it. Fig.

4 represents the tooth A as it is shut up be tween parts ot' frame B.

What I claim as my invention, and desire to secure by Letters Patent, is

The cap C, spring G, andpivotedtooth A,

`in combination with the frame of the harrow B, as and for the purpose specified.

JOHN FRANKOHASE.

Witnesses: A

J .BRAINERD, D. P. COWL.

PATENT OFFICE. 

